1 /* 2 ******************************************************************************* 3 ** O.S : Linux 4 ** FILE NAME : arcmsr_hba.c 5 ** BY : Erich Chen 6 ** Description: SCSI RAID Device Driver for 7 ** ARECA RAID Host adapter 8 ******************************************************************************* 9 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved 10 ** 11 ** Web site: www.areca.com.tw 12 ** E-mail: support@areca.com.tw 13 ** 14 ** This program is free software; you can redistribute it and/or modify 15 ** it under the terms of the GNU General Public License version 2 as 16 ** published by the Free Software Foundation. 17 ** This program is distributed in the hope that it will be useful, 18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 ** GNU General Public License for more details. 21 ******************************************************************************* 22 ** Redistribution and use in source and binary forms, with or without 23 ** modification, are permitted provided that the following conditions 24 ** are met: 25 ** 1. Redistributions of source code must retain the above copyright 26 ** notice, this list of conditions and the following disclaimer. 27 ** 2. Redistributions in binary form must reproduce the above copyright 28 ** notice, this list of conditions and the following disclaimer in the 29 ** documentation and/or other materials provided with the distribution. 30 ** 3. The name of the author may not be used to endorse or promote products 31 ** derived from this software without specific prior written permission. 32 ** 33 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 34 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 35 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 36 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 37 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT 38 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 39 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY 40 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 41 ** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF 42 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 43 ******************************************************************************* 44 ** For history of changes, see Documentation/scsi/ChangeLog.arcmsr 45 ** Firmware Specification, see Documentation/scsi/arcmsr_spec.txt 46 ******************************************************************************* 47 */ 48 #include <linux/module.h> 49 #include <linux/reboot.h> 50 #include <linux/spinlock.h> 51 #include <linux/pci_ids.h> 52 #include <linux/interrupt.h> 53 #include <linux/moduleparam.h> 54 #include <linux/errno.h> 55 #include <linux/types.h> 56 #include <linux/delay.h> 57 #include <linux/dma-mapping.h> 58 #include <linux/timer.h> 59 #include <linux/pci.h> 60 #include <linux/aer.h> 61 #include <asm/dma.h> 62 #include <asm/io.h> 63 #include <asm/system.h> 64 #include <asm/uaccess.h> 65 #include <scsi/scsi_host.h> 66 #include <scsi/scsi.h> 67 #include <scsi/scsi_cmnd.h> 68 #include <scsi/scsi_tcq.h> 69 #include <scsi/scsi_device.h> 70 #include <scsi/scsi_transport.h> 71 #include <scsi/scsicam.h> 72 #include "arcmsr.h" 73 74 MODULE_AUTHOR("Erich Chen <support@areca.com.tw>"); 75 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter"); 76 MODULE_LICENSE("Dual BSD/GPL"); 77 MODULE_VERSION(ARCMSR_DRIVER_VERSION); 78 79 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, 80 struct scsi_cmnd *cmd); 81 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb); 82 static int arcmsr_abort(struct scsi_cmnd *); 83 static int arcmsr_bus_reset(struct scsi_cmnd *); 84 static int arcmsr_bios_param(struct scsi_device *sdev, 85 struct block_device *bdev, sector_t capacity, int *info); 86 static int arcmsr_queue_command(struct scsi_cmnd *cmd, 87 void (*done) (struct scsi_cmnd *)); 88 static int arcmsr_probe(struct pci_dev *pdev, 89 const struct pci_device_id *id); 90 static void arcmsr_remove(struct pci_dev *pdev); 91 static void arcmsr_shutdown(struct pci_dev *pdev); 92 static void arcmsr_iop_init(struct AdapterControlBlock *acb); 93 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb); 94 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb); 95 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb); 96 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb); 97 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb); 98 static const char *arcmsr_info(struct Scsi_Host *); 99 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb); 100 static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, 101 int queue_depth) 102 { 103 if (queue_depth > ARCMSR_MAX_CMD_PERLUN) 104 queue_depth = ARCMSR_MAX_CMD_PERLUN; 105 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); 106 return queue_depth; 107 } 108 109 static struct scsi_host_template arcmsr_scsi_host_template = { 110 .module = THIS_MODULE, 111 .name = "ARCMSR ARECA SATA/SAS RAID HOST Adapter" 112 ARCMSR_DRIVER_VERSION, 113 .info = arcmsr_info, 114 .queuecommand = arcmsr_queue_command, 115 .eh_abort_handler = arcmsr_abort, 116 .eh_bus_reset_handler = arcmsr_bus_reset, 117 .bios_param = arcmsr_bios_param, 118 .change_queue_depth = arcmsr_adjust_disk_queue_depth, 119 .can_queue = ARCMSR_MAX_OUTSTANDING_CMD, 120 .this_id = ARCMSR_SCSI_INITIATOR_ID, 121 .sg_tablesize = ARCMSR_MAX_SG_ENTRIES, 122 .max_sectors = ARCMSR_MAX_XFER_SECTORS, 123 .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN, 124 .use_clustering = ENABLE_CLUSTERING, 125 .shost_attrs = arcmsr_host_attrs, 126 }; 127 #ifdef CONFIG_SCSI_ARCMSR_AER 128 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev); 129 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 130 pci_channel_state_t state); 131 132 static struct pci_error_handlers arcmsr_pci_error_handlers = { 133 .error_detected = arcmsr_pci_error_detected, 134 .slot_reset = arcmsr_pci_slot_reset, 135 }; 136 #endif 137 static struct pci_device_id arcmsr_device_id_table[] = { 138 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)}, 139 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)}, 140 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)}, 141 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)}, 142 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)}, 143 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)}, 144 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)}, 145 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)}, 146 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)}, 147 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)}, 148 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)}, 149 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260)}, 150 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270)}, 151 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280)}, 152 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380)}, 153 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381)}, 154 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680)}, 155 {PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681)}, 156 {0, 0}, /* Terminating entry */ 157 }; 158 MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table); 159 static struct pci_driver arcmsr_pci_driver = { 160 .name = "arcmsr", 161 .id_table = arcmsr_device_id_table, 162 .probe = arcmsr_probe, 163 .remove = arcmsr_remove, 164 .shutdown = arcmsr_shutdown, 165 #ifdef CONFIG_SCSI_ARCMSR_AER 166 .err_handler = &arcmsr_pci_error_handlers, 167 #endif 168 }; 169 170 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id) 171 { 172 irqreturn_t handle_state; 173 struct AdapterControlBlock *acb = dev_id; 174 175 spin_lock(acb->host->host_lock); 176 handle_state = arcmsr_interrupt(acb); 177 spin_unlock(acb->host->host_lock); 178 179 return handle_state; 180 } 181 182 static int arcmsr_bios_param(struct scsi_device *sdev, 183 struct block_device *bdev, sector_t capacity, int *geom) 184 { 185 int ret, heads, sectors, cylinders, total_capacity; 186 unsigned char *buffer;/* return copy of block device's partition table */ 187 188 buffer = scsi_bios_ptable(bdev); 189 if (buffer) { 190 ret = scsi_partsize(buffer, capacity, &geom[2], &geom[0], &geom[1]); 191 kfree(buffer); 192 if (ret != -1) 193 return ret; 194 } 195 total_capacity = capacity; 196 heads = 64; 197 sectors = 32; 198 cylinders = total_capacity / (heads * sectors); 199 if (cylinders > 1024) { 200 heads = 255; 201 sectors = 63; 202 cylinders = total_capacity / (heads * sectors); 203 } 204 geom[0] = heads; 205 geom[1] = sectors; 206 geom[2] = cylinders; 207 return 0; 208 } 209 210 static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb) 211 { 212 struct pci_dev *pdev = acb->pdev; 213 u16 dev_id; 214 pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id); 215 switch (dev_id) { 216 case 0x1201 : { 217 acb->adapter_type = ACB_ADAPTER_TYPE_B; 218 } 219 break; 220 221 default : acb->adapter_type = ACB_ADAPTER_TYPE_A; 222 } 223 } 224 225 static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb) 226 { 227 228 switch (acb->adapter_type) { 229 230 case ACB_ADAPTER_TYPE_A: { 231 struct pci_dev *pdev = acb->pdev; 232 void *dma_coherent; 233 dma_addr_t dma_coherent_handle, dma_addr; 234 struct CommandControlBlock *ccb_tmp; 235 uint32_t intmask_org; 236 int i, j; 237 238 acb->pmuA = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); 239 if (!acb->pmuA) { 240 printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", 241 acb->host->host_no); 242 return -ENOMEM; 243 } 244 245 dma_coherent = dma_alloc_coherent(&pdev->dev, 246 ARCMSR_MAX_FREECCB_NUM * 247 sizeof (struct CommandControlBlock) + 0x20, 248 &dma_coherent_handle, GFP_KERNEL); 249 250 if (!dma_coherent) { 251 iounmap(acb->pmuA); 252 return -ENOMEM; 253 } 254 255 acb->dma_coherent = dma_coherent; 256 acb->dma_coherent_handle = dma_coherent_handle; 257 258 if (((unsigned long)dma_coherent & 0x1F)) { 259 dma_coherent = dma_coherent + 260 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 261 dma_coherent_handle = dma_coherent_handle + 262 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 263 } 264 265 dma_addr = dma_coherent_handle; 266 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 267 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 268 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 269 ccb_tmp->acb = acb; 270 acb->pccb_pool[i] = ccb_tmp; 271 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 272 dma_addr = dma_addr + sizeof(struct CommandControlBlock); 273 ccb_tmp++; 274 } 275 276 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 277 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 278 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 279 acb->devstate[i][j] = ARECA_RAID_GONE; 280 281 /* 282 ** here we need to tell iop 331 our ccb_tmp.HighPart 283 ** if ccb_tmp.HighPart is not zero 284 */ 285 intmask_org = arcmsr_disable_outbound_ints(acb); 286 } 287 break; 288 289 case ACB_ADAPTER_TYPE_B: { 290 291 struct pci_dev *pdev = acb->pdev; 292 struct MessageUnit_B *reg; 293 void __iomem *mem_base0, *mem_base1; 294 void *dma_coherent; 295 dma_addr_t dma_coherent_handle, dma_addr; 296 uint32_t intmask_org; 297 struct CommandControlBlock *ccb_tmp; 298 int i, j; 299 300 dma_coherent = dma_alloc_coherent(&pdev->dev, 301 ((ARCMSR_MAX_FREECCB_NUM * 302 sizeof(struct CommandControlBlock) + 0x20) + 303 sizeof(struct MessageUnit_B)), 304 &dma_coherent_handle, GFP_KERNEL); 305 if (!dma_coherent) 306 return -ENOMEM; 307 308 acb->dma_coherent = dma_coherent; 309 acb->dma_coherent_handle = dma_coherent_handle; 310 311 if (((unsigned long)dma_coherent & 0x1F)) { 312 dma_coherent = dma_coherent + 313 (0x20 - ((unsigned long)dma_coherent & 0x1F)); 314 dma_coherent_handle = dma_coherent_handle + 315 (0x20 - ((unsigned long)dma_coherent_handle & 0x1F)); 316 } 317 318 dma_addr = dma_coherent_handle; 319 ccb_tmp = (struct CommandControlBlock *)dma_coherent; 320 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 321 ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5; 322 ccb_tmp->acb = acb; 323 acb->pccb_pool[i] = ccb_tmp; 324 list_add_tail(&ccb_tmp->list, &acb->ccb_free_list); 325 dma_addr = dma_addr + sizeof(struct CommandControlBlock); 326 ccb_tmp++; 327 } 328 329 reg = (struct MessageUnit_B *)(dma_coherent + 330 ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock)); 331 acb->pmuB = reg; 332 mem_base0 = ioremap(pci_resource_start(pdev, 0), 333 pci_resource_len(pdev, 0)); 334 if (!mem_base0) 335 goto out; 336 337 mem_base1 = ioremap(pci_resource_start(pdev, 2), 338 pci_resource_len(pdev, 2)); 339 if (!mem_base1) { 340 iounmap(mem_base0); 341 goto out; 342 } 343 344 reg->drv2iop_doorbell_reg = mem_base0 + ARCMSR_DRV2IOP_DOORBELL; 345 reg->drv2iop_doorbell_mask_reg = mem_base0 + 346 ARCMSR_DRV2IOP_DOORBELL_MASK; 347 reg->iop2drv_doorbell_reg = mem_base0 + ARCMSR_IOP2DRV_DOORBELL; 348 reg->iop2drv_doorbell_mask_reg = mem_base0 + 349 ARCMSR_IOP2DRV_DOORBELL_MASK; 350 reg->ioctl_wbuffer_reg = mem_base1 + ARCMSR_IOCTL_WBUFFER; 351 reg->ioctl_rbuffer_reg = mem_base1 + ARCMSR_IOCTL_RBUFFER; 352 reg->msgcode_rwbuffer_reg = mem_base1 + ARCMSR_MSGCODE_RWBUFFER; 353 354 acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr; 355 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 356 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 357 acb->devstate[i][j] = ARECA_RAID_GOOD; 358 359 /* 360 ** here we need to tell iop 331 our ccb_tmp.HighPart 361 ** if ccb_tmp.HighPart is not zero 362 */ 363 intmask_org = arcmsr_disable_outbound_ints(acb); 364 } 365 break; 366 } 367 return 0; 368 369 out: 370 dma_free_coherent(&acb->pdev->dev, 371 (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 + 372 sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle); 373 return -ENOMEM; 374 } 375 376 static int arcmsr_probe(struct pci_dev *pdev, 377 const struct pci_device_id *id) 378 { 379 struct Scsi_Host *host; 380 struct AdapterControlBlock *acb; 381 uint8_t bus, dev_fun; 382 int error; 383 384 error = pci_enable_device(pdev); 385 if (error) 386 goto out; 387 pci_set_master(pdev); 388 389 host = scsi_host_alloc(&arcmsr_scsi_host_template, 390 sizeof(struct AdapterControlBlock)); 391 if (!host) { 392 error = -ENOMEM; 393 goto out_disable_device; 394 } 395 acb = (struct AdapterControlBlock *)host->hostdata; 396 memset(acb, 0, sizeof (struct AdapterControlBlock)); 397 398 error = pci_set_dma_mask(pdev, DMA_64BIT_MASK); 399 if (error) { 400 error = pci_set_dma_mask(pdev, DMA_32BIT_MASK); 401 if (error) { 402 printk(KERN_WARNING 403 "scsi%d: No suitable DMA mask available\n", 404 host->host_no); 405 goto out_host_put; 406 } 407 } 408 bus = pdev->bus->number; 409 dev_fun = pdev->devfn; 410 acb->host = host; 411 acb->pdev = pdev; 412 host->max_sectors = ARCMSR_MAX_XFER_SECTORS; 413 host->max_lun = ARCMSR_MAX_TARGETLUN; 414 host->max_id = ARCMSR_MAX_TARGETID;/*16:8*/ 415 host->max_cmd_len = 16; /*this is issue of 64bit LBA, over 2T byte*/ 416 host->sg_tablesize = ARCMSR_MAX_SG_ENTRIES; 417 host->can_queue = ARCMSR_MAX_FREECCB_NUM; /* max simultaneous cmds */ 418 host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; 419 host->this_id = ARCMSR_SCSI_INITIATOR_ID; 420 host->unique_id = (bus << 8) | dev_fun; 421 host->irq = pdev->irq; 422 error = pci_request_regions(pdev, "arcmsr"); 423 if (error) { 424 goto out_host_put; 425 } 426 arcmsr_define_adapter_type(acb); 427 428 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 429 ACB_F_MESSAGE_RQBUFFER_CLEARED | 430 ACB_F_MESSAGE_WQBUFFER_READED); 431 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 432 INIT_LIST_HEAD(&acb->ccb_free_list); 433 434 error = arcmsr_alloc_ccb_pool(acb); 435 if (error) 436 goto out_release_regions; 437 438 error = request_irq(pdev->irq, arcmsr_do_interrupt, 439 IRQF_SHARED, "arcmsr", acb); 440 if (error) 441 goto out_free_ccb_pool; 442 443 arcmsr_iop_init(acb); 444 pci_set_drvdata(pdev, host); 445 if (strncmp(acb->firm_version, "V1.42", 5) >= 0) 446 host->max_sectors= ARCMSR_MAX_XFER_SECTORS_B; 447 448 error = scsi_add_host(host, &pdev->dev); 449 if (error) 450 goto out_free_irq; 451 452 error = arcmsr_alloc_sysfs_attr(acb); 453 if (error) 454 goto out_free_sysfs; 455 456 scsi_scan_host(host); 457 #ifdef CONFIG_SCSI_ARCMSR_AER 458 pci_enable_pcie_error_reporting(pdev); 459 #endif 460 return 0; 461 out_free_sysfs: 462 out_free_irq: 463 free_irq(pdev->irq, acb); 464 out_free_ccb_pool: 465 arcmsr_free_ccb_pool(acb); 466 out_release_regions: 467 pci_release_regions(pdev); 468 out_host_put: 469 scsi_host_put(host); 470 out_disable_device: 471 pci_disable_device(pdev); 472 out: 473 return error; 474 } 475 476 static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb) 477 { 478 struct MessageUnit_A __iomem *reg = acb->pmuA; 479 uint32_t Index; 480 uint8_t Retries = 0x00; 481 482 do { 483 for (Index = 0; Index < 100; Index++) { 484 if (readl(®->outbound_intstatus) & 485 ARCMSR_MU_OUTBOUND_MESSAGE0_INT) { 486 writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, 487 ®->outbound_intstatus); 488 return 0x00; 489 } 490 msleep(10); 491 }/*max 1 seconds*/ 492 493 } while (Retries++ < 20);/*max 20 sec*/ 494 return 0xff; 495 } 496 497 static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb) 498 { 499 struct MessageUnit_B *reg = acb->pmuB; 500 uint32_t Index; 501 uint8_t Retries = 0x00; 502 503 do { 504 for (Index = 0; Index < 100; Index++) { 505 if (readl(reg->iop2drv_doorbell_reg) 506 & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) { 507 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN 508 , reg->iop2drv_doorbell_reg); 509 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); 510 return 0x00; 511 } 512 msleep(10); 513 }/*max 1 seconds*/ 514 515 } while (Retries++ < 20);/*max 20 sec*/ 516 return 0xff; 517 } 518 519 static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb) 520 { 521 struct MessageUnit_A __iomem *reg = acb->pmuA; 522 523 writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, ®->inbound_msgaddr0); 524 if (arcmsr_hba_wait_msgint_ready(acb)) 525 printk(KERN_NOTICE 526 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 527 , acb->host->host_no); 528 } 529 530 static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb) 531 { 532 struct MessageUnit_B *reg = acb->pmuB; 533 534 writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg); 535 if (arcmsr_hbb_wait_msgint_ready(acb)) 536 printk(KERN_NOTICE 537 "arcmsr%d: wait 'abort all outstanding command' timeout \n" 538 , acb->host->host_no); 539 } 540 541 static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb) 542 { 543 switch (acb->adapter_type) { 544 case ACB_ADAPTER_TYPE_A: { 545 arcmsr_abort_hba_allcmd(acb); 546 } 547 break; 548 549 case ACB_ADAPTER_TYPE_B: { 550 arcmsr_abort_hbb_allcmd(acb); 551 } 552 } 553 } 554 555 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb) 556 { 557 struct scsi_cmnd *pcmd = ccb->pcmd; 558 559 scsi_dma_unmap(pcmd); 560 } 561 562 static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag) 563 { 564 struct AdapterControlBlock *acb = ccb->acb; 565 struct scsi_cmnd *pcmd = ccb->pcmd; 566 567 arcmsr_pci_unmap_dma(ccb); 568 if (stand_flag == 1) 569 atomic_dec(&acb->ccboutstandingcount); 570 ccb->startdone = ARCMSR_CCB_DONE; 571 ccb->ccb_flags = 0; 572 list_add_tail(&ccb->list, &acb->ccb_free_list); 573 pcmd->scsi_done(pcmd); 574 } 575 576 static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb) 577 { 578 struct MessageUnit_A __iomem *reg = acb->pmuA; 579 int retry_count = 30; 580 581 writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, ®->inbound_msgaddr0); 582 do { 583 if (!arcmsr_hba_wait_msgint_ready(acb)) 584 break; 585 else { 586 retry_count--; 587 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 588 timeout, retry count down = %d \n", acb->host->host_no, retry_count); 589 } 590 } while (retry_count != 0); 591 } 592 593 static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb) 594 { 595 struct MessageUnit_B *reg = acb->pmuB; 596 int retry_count = 30; 597 598 writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg); 599 do { 600 if (!arcmsr_hbb_wait_msgint_ready(acb)) 601 break; 602 else { 603 retry_count--; 604 printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \ 605 timeout,retry count down = %d \n", acb->host->host_no, retry_count); 606 } 607 } while (retry_count != 0); 608 } 609 610 static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb) 611 { 612 switch (acb->adapter_type) { 613 614 case ACB_ADAPTER_TYPE_A: { 615 arcmsr_flush_hba_cache(acb); 616 } 617 break; 618 619 case ACB_ADAPTER_TYPE_B: { 620 arcmsr_flush_hbb_cache(acb); 621 } 622 } 623 } 624 625 static void arcmsr_report_sense_info(struct CommandControlBlock *ccb) 626 { 627 628 struct scsi_cmnd *pcmd = ccb->pcmd; 629 struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer; 630 631 pcmd->result = DID_OK << 16; 632 if (sensebuffer) { 633 int sense_data_length = 634 sizeof(struct SENSE_DATA) < SCSI_SENSE_BUFFERSIZE 635 ? sizeof(struct SENSE_DATA) : SCSI_SENSE_BUFFERSIZE; 636 memset(sensebuffer, 0, SCSI_SENSE_BUFFERSIZE); 637 memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length); 638 sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS; 639 sensebuffer->Valid = 1; 640 } 641 } 642 643 static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb) 644 { 645 u32 orig_mask = 0; 646 switch (acb->adapter_type) { 647 648 case ACB_ADAPTER_TYPE_A : { 649 struct MessageUnit_A __iomem *reg = acb->pmuA; 650 orig_mask = readl(®->outbound_intmask)|\ 651 ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE; 652 writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \ 653 ®->outbound_intmask); 654 } 655 break; 656 657 case ACB_ADAPTER_TYPE_B : { 658 struct MessageUnit_B *reg = acb->pmuB; 659 orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \ 660 (~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE); 661 writel(0, reg->iop2drv_doorbell_mask_reg); 662 } 663 break; 664 } 665 return orig_mask; 666 } 667 668 static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \ 669 struct CommandControlBlock *ccb, uint32_t flag_ccb) 670 { 671 672 uint8_t id, lun; 673 id = ccb->pcmd->device->id; 674 lun = ccb->pcmd->device->lun; 675 if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR)) { 676 if (acb->devstate[id][lun] == ARECA_RAID_GONE) 677 acb->devstate[id][lun] = ARECA_RAID_GOOD; 678 ccb->pcmd->result = DID_OK << 16; 679 arcmsr_ccb_complete(ccb, 1); 680 } else { 681 switch (ccb->arcmsr_cdb.DeviceStatus) { 682 case ARCMSR_DEV_SELECT_TIMEOUT: { 683 acb->devstate[id][lun] = ARECA_RAID_GONE; 684 ccb->pcmd->result = DID_NO_CONNECT << 16; 685 arcmsr_ccb_complete(ccb, 1); 686 } 687 break; 688 689 case ARCMSR_DEV_ABORTED: 690 691 case ARCMSR_DEV_INIT_FAIL: { 692 acb->devstate[id][lun] = ARECA_RAID_GONE; 693 ccb->pcmd->result = DID_BAD_TARGET << 16; 694 arcmsr_ccb_complete(ccb, 1); 695 } 696 break; 697 698 case ARCMSR_DEV_CHECK_CONDITION: { 699 acb->devstate[id][lun] = ARECA_RAID_GOOD; 700 arcmsr_report_sense_info(ccb); 701 arcmsr_ccb_complete(ccb, 1); 702 } 703 break; 704 705 default: 706 printk(KERN_NOTICE 707 "arcmsr%d: scsi id = %d lun = %d" 708 " isr get command error done, " 709 "but got unknown DeviceStatus = 0x%x \n" 710 , acb->host->host_no 711 , id 712 , lun 713 , ccb->arcmsr_cdb.DeviceStatus); 714 acb->devstate[id][lun] = ARECA_RAID_GONE; 715 ccb->pcmd->result = DID_NO_CONNECT << 16; 716 arcmsr_ccb_complete(ccb, 1); 717 break; 718 } 719 } 720 } 721 722 static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb) 723 724 { 725 struct CommandControlBlock *ccb; 726 727 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 728 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 729 if (ccb->startdone == ARCMSR_CCB_ABORTED) { 730 struct scsi_cmnd *abortcmd = ccb->pcmd; 731 if (abortcmd) { 732 abortcmd->result |= DID_ABORT << 16; 733 arcmsr_ccb_complete(ccb, 1); 734 printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \ 735 isr got aborted command \n", acb->host->host_no, ccb); 736 } 737 } 738 printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \ 739 done acb = '0x%p'" 740 "ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x" 741 " ccboutstandingcount = %d \n" 742 , acb->host->host_no 743 , acb 744 , ccb 745 , ccb->acb 746 , ccb->startdone 747 , atomic_read(&acb->ccboutstandingcount)); 748 } 749 else 750 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 751 } 752 753 static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb) 754 { 755 int i = 0; 756 uint32_t flag_ccb; 757 758 switch (acb->adapter_type) { 759 760 case ACB_ADAPTER_TYPE_A: { 761 struct MessageUnit_A __iomem *reg = acb->pmuA; 762 uint32_t outbound_intstatus; 763 outbound_intstatus = readl(®->outbound_intstatus) & 764 acb->outbound_int_enable; 765 /*clear and abort all outbound posted Q*/ 766 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 767 while (((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) 768 && (i++ < ARCMSR_MAX_OUTSTANDING_CMD)) { 769 arcmsr_drain_donequeue(acb, flag_ccb); 770 } 771 } 772 break; 773 774 case ACB_ADAPTER_TYPE_B: { 775 struct MessageUnit_B *reg = acb->pmuB; 776 /*clear all outbound posted Q*/ 777 for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) { 778 if ((flag_ccb = readl(®->done_qbuffer[i])) != 0) { 779 writel(0, ®->done_qbuffer[i]); 780 arcmsr_drain_donequeue(acb, flag_ccb); 781 } 782 writel(0, ®->post_qbuffer[i]); 783 } 784 reg->doneq_index = 0; 785 reg->postq_index = 0; 786 } 787 break; 788 } 789 } 790 static void arcmsr_remove(struct pci_dev *pdev) 791 { 792 struct Scsi_Host *host = pci_get_drvdata(pdev); 793 struct AdapterControlBlock *acb = 794 (struct AdapterControlBlock *) host->hostdata; 795 int poll_count = 0; 796 797 arcmsr_free_sysfs_attr(acb); 798 scsi_remove_host(host); 799 arcmsr_stop_adapter_bgrb(acb); 800 arcmsr_flush_adapter_cache(acb); 801 arcmsr_disable_outbound_ints(acb); 802 acb->acb_flags |= ACB_F_SCSISTOPADAPTER; 803 acb->acb_flags &= ~ACB_F_IOP_INITED; 804 805 for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) { 806 if (!atomic_read(&acb->ccboutstandingcount)) 807 break; 808 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 809 msleep(25); 810 } 811 812 if (atomic_read(&acb->ccboutstandingcount)) { 813 int i; 814 815 arcmsr_abort_allcmd(acb); 816 arcmsr_done4abort_postqueue(acb); 817 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 818 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 819 if (ccb->startdone == ARCMSR_CCB_START) { 820 ccb->startdone = ARCMSR_CCB_ABORTED; 821 ccb->pcmd->result = DID_ABORT << 16; 822 arcmsr_ccb_complete(ccb, 1); 823 } 824 } 825 } 826 827 free_irq(pdev->irq, acb); 828 arcmsr_free_ccb_pool(acb); 829 pci_release_regions(pdev); 830 831 scsi_host_put(host); 832 833 pci_disable_device(pdev); 834 pci_set_drvdata(pdev, NULL); 835 } 836 837 static void arcmsr_shutdown(struct pci_dev *pdev) 838 { 839 struct Scsi_Host *host = pci_get_drvdata(pdev); 840 struct AdapterControlBlock *acb = 841 (struct AdapterControlBlock *)host->hostdata; 842 843 arcmsr_stop_adapter_bgrb(acb); 844 arcmsr_flush_adapter_cache(acb); 845 } 846 847 static int arcmsr_module_init(void) 848 { 849 int error = 0; 850 851 error = pci_register_driver(&arcmsr_pci_driver); 852 return error; 853 } 854 855 static void arcmsr_module_exit(void) 856 { 857 pci_unregister_driver(&arcmsr_pci_driver); 858 } 859 module_init(arcmsr_module_init); 860 module_exit(arcmsr_module_exit); 861 862 static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \ 863 u32 intmask_org) 864 { 865 u32 mask; 866 867 switch (acb->adapter_type) { 868 869 case ACB_ADAPTER_TYPE_A : { 870 struct MessageUnit_A __iomem *reg = acb->pmuA; 871 mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE | 872 ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE); 873 writel(mask, ®->outbound_intmask); 874 acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff; 875 } 876 break; 877 878 case ACB_ADAPTER_TYPE_B : { 879 struct MessageUnit_B *reg = acb->pmuB; 880 mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \ 881 ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE); 882 writel(mask, reg->iop2drv_doorbell_mask_reg); 883 acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f; 884 } 885 } 886 } 887 888 static int arcmsr_build_ccb(struct AdapterControlBlock *acb, 889 struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd) 890 { 891 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 892 int8_t *psge = (int8_t *)&arcmsr_cdb->u; 893 __le32 address_lo, address_hi; 894 int arccdbsize = 0x30; 895 int nseg; 896 897 ccb->pcmd = pcmd; 898 memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB)); 899 arcmsr_cdb->Bus = 0; 900 arcmsr_cdb->TargetID = pcmd->device->id; 901 arcmsr_cdb->LUN = pcmd->device->lun; 902 arcmsr_cdb->Function = 1; 903 arcmsr_cdb->CdbLength = (uint8_t)pcmd->cmd_len; 904 arcmsr_cdb->Context = (unsigned long)arcmsr_cdb; 905 memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len); 906 907 nseg = scsi_dma_map(pcmd); 908 if (nseg > ARCMSR_MAX_SG_ENTRIES) 909 return FAILED; 910 BUG_ON(nseg < 0); 911 912 if (nseg) { 913 __le32 length; 914 int i, cdb_sgcount = 0; 915 struct scatterlist *sg; 916 917 /* map stor port SG list to our iop SG List. */ 918 scsi_for_each_sg(pcmd, sg, nseg, i) { 919 /* Get the physical address of the current data pointer */ 920 length = cpu_to_le32(sg_dma_len(sg)); 921 address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg))); 922 address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg))); 923 if (address_hi == 0) { 924 struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge; 925 926 pdma_sg->address = address_lo; 927 pdma_sg->length = length; 928 psge += sizeof (struct SG32ENTRY); 929 arccdbsize += sizeof (struct SG32ENTRY); 930 } else { 931 struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge; 932 933 pdma_sg->addresshigh = address_hi; 934 pdma_sg->address = address_lo; 935 pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR); 936 psge += sizeof (struct SG64ENTRY); 937 arccdbsize += sizeof (struct SG64ENTRY); 938 } 939 cdb_sgcount++; 940 } 941 arcmsr_cdb->sgcount = (uint8_t)cdb_sgcount; 942 arcmsr_cdb->DataLength = scsi_bufflen(pcmd); 943 if ( arccdbsize > 256) 944 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE; 945 } 946 if (pcmd->sc_data_direction == DMA_TO_DEVICE ) { 947 arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE; 948 ccb->ccb_flags |= CCB_FLAG_WRITE; 949 } 950 return SUCCESS; 951 } 952 953 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb) 954 { 955 uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr; 956 struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb; 957 atomic_inc(&acb->ccboutstandingcount); 958 ccb->startdone = ARCMSR_CCB_START; 959 960 switch (acb->adapter_type) { 961 case ACB_ADAPTER_TYPE_A: { 962 struct MessageUnit_A __iomem *reg = acb->pmuA; 963 964 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) 965 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE, 966 ®->inbound_queueport); 967 else { 968 writel(cdb_shifted_phyaddr, ®->inbound_queueport); 969 } 970 } 971 break; 972 973 case ACB_ADAPTER_TYPE_B: { 974 struct MessageUnit_B *reg = acb->pmuB; 975 uint32_t ending_index, index = reg->postq_index; 976 977 ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE); 978 writel(0, ®->post_qbuffer[ending_index]); 979 if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) { 980 writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\ 981 ®->post_qbuffer[index]); 982 } 983 else { 984 writel(cdb_shifted_phyaddr, ®->post_qbuffer[index]); 985 } 986 index++; 987 index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */ 988 reg->postq_index = index; 989 writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell_reg); 990 } 991 break; 992 } 993 } 994 995 static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb) 996 { 997 struct MessageUnit_A __iomem *reg = acb->pmuA; 998 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 999 writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, ®->inbound_msgaddr0); 1000 1001 if (arcmsr_hba_wait_msgint_ready(acb)) { 1002 printk(KERN_NOTICE 1003 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 1004 , acb->host->host_no); 1005 } 1006 } 1007 1008 static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb) 1009 { 1010 struct MessageUnit_B *reg = acb->pmuB; 1011 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1012 writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg); 1013 1014 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1015 printk(KERN_NOTICE 1016 "arcmsr%d: wait 'stop adapter background rebulid' timeout \n" 1017 , acb->host->host_no); 1018 } 1019 } 1020 1021 static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb) 1022 { 1023 switch (acb->adapter_type) { 1024 case ACB_ADAPTER_TYPE_A: { 1025 arcmsr_stop_hba_bgrb(acb); 1026 } 1027 break; 1028 1029 case ACB_ADAPTER_TYPE_B: { 1030 arcmsr_stop_hbb_bgrb(acb); 1031 } 1032 break; 1033 } 1034 } 1035 1036 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb) 1037 { 1038 switch (acb->adapter_type) { 1039 case ACB_ADAPTER_TYPE_A: { 1040 iounmap(acb->pmuA); 1041 dma_free_coherent(&acb->pdev->dev, 1042 ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20, 1043 acb->dma_coherent, 1044 acb->dma_coherent_handle); 1045 break; 1046 } 1047 case ACB_ADAPTER_TYPE_B: { 1048 struct MessageUnit_B *reg = acb->pmuB; 1049 iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL); 1050 iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER); 1051 dma_free_coherent(&acb->pdev->dev, 1052 (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 + 1053 sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle); 1054 } 1055 } 1056 1057 } 1058 1059 void arcmsr_iop_message_read(struct AdapterControlBlock *acb) 1060 { 1061 switch (acb->adapter_type) { 1062 case ACB_ADAPTER_TYPE_A: { 1063 struct MessageUnit_A __iomem *reg = acb->pmuA; 1064 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 1065 } 1066 break; 1067 1068 case ACB_ADAPTER_TYPE_B: { 1069 struct MessageUnit_B *reg = acb->pmuB; 1070 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 1071 } 1072 break; 1073 } 1074 } 1075 1076 static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb) 1077 { 1078 switch (acb->adapter_type) { 1079 case ACB_ADAPTER_TYPE_A: { 1080 struct MessageUnit_A __iomem *reg = acb->pmuA; 1081 /* 1082 ** push inbound doorbell tell iop, driver data write ok 1083 ** and wait reply on next hwinterrupt for next Qbuffer post 1084 */ 1085 writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, ®->inbound_doorbell); 1086 } 1087 break; 1088 1089 case ACB_ADAPTER_TYPE_B: { 1090 struct MessageUnit_B *reg = acb->pmuB; 1091 /* 1092 ** push inbound doorbell tell iop, driver data write ok 1093 ** and wait reply on next hwinterrupt for next Qbuffer post 1094 */ 1095 writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell_reg); 1096 } 1097 break; 1098 } 1099 } 1100 1101 struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb) 1102 { 1103 struct QBUFFER __iomem *qbuffer = NULL; 1104 1105 switch (acb->adapter_type) { 1106 1107 case ACB_ADAPTER_TYPE_A: { 1108 struct MessageUnit_A __iomem *reg = acb->pmuA; 1109 qbuffer = (struct QBUFFER __iomem *)®->message_rbuffer; 1110 } 1111 break; 1112 1113 case ACB_ADAPTER_TYPE_B: { 1114 struct MessageUnit_B *reg = acb->pmuB; 1115 qbuffer = (struct QBUFFER __iomem *)reg->ioctl_rbuffer_reg; 1116 } 1117 break; 1118 } 1119 return qbuffer; 1120 } 1121 1122 static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb) 1123 { 1124 struct QBUFFER __iomem *pqbuffer = NULL; 1125 1126 switch (acb->adapter_type) { 1127 1128 case ACB_ADAPTER_TYPE_A: { 1129 struct MessageUnit_A __iomem *reg = acb->pmuA; 1130 pqbuffer = (struct QBUFFER __iomem *) ®->message_wbuffer; 1131 } 1132 break; 1133 1134 case ACB_ADAPTER_TYPE_B: { 1135 struct MessageUnit_B *reg = acb->pmuB; 1136 pqbuffer = (struct QBUFFER __iomem *)reg->ioctl_wbuffer_reg; 1137 } 1138 break; 1139 } 1140 return pqbuffer; 1141 } 1142 1143 static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb) 1144 { 1145 struct QBUFFER __iomem *prbuffer; 1146 struct QBUFFER *pQbuffer; 1147 uint8_t __iomem *iop_data; 1148 int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex; 1149 1150 rqbuf_lastindex = acb->rqbuf_lastindex; 1151 rqbuf_firstindex = acb->rqbuf_firstindex; 1152 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1153 iop_data = (uint8_t __iomem *)prbuffer->data; 1154 iop_len = prbuffer->data_len; 1155 my_empty_len = (rqbuf_firstindex - rqbuf_lastindex -1)&(ARCMSR_MAX_QBUFFER -1); 1156 1157 if (my_empty_len >= iop_len) 1158 { 1159 while (iop_len > 0) { 1160 pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex]; 1161 memcpy(pQbuffer, iop_data,1); 1162 rqbuf_lastindex++; 1163 rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1164 iop_data++; 1165 iop_len--; 1166 } 1167 acb->rqbuf_lastindex = rqbuf_lastindex; 1168 arcmsr_iop_message_read(acb); 1169 } 1170 1171 else { 1172 acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; 1173 } 1174 } 1175 1176 static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb) 1177 { 1178 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED; 1179 if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) { 1180 uint8_t *pQbuffer; 1181 struct QBUFFER __iomem *pwbuffer; 1182 uint8_t __iomem *iop_data; 1183 int32_t allxfer_len = 0; 1184 1185 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1186 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1187 iop_data = (uint8_t __iomem *)pwbuffer->data; 1188 1189 while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \ 1190 (allxfer_len < 124)) { 1191 pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex]; 1192 memcpy(iop_data, pQbuffer, 1); 1193 acb->wqbuf_firstindex++; 1194 acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1195 iop_data++; 1196 allxfer_len++; 1197 } 1198 pwbuffer->data_len = allxfer_len; 1199 1200 arcmsr_iop_message_wrote(acb); 1201 } 1202 1203 if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) { 1204 acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED; 1205 } 1206 } 1207 1208 static void arcmsr_hba_doorbell_isr(struct AdapterControlBlock *acb) 1209 { 1210 uint32_t outbound_doorbell; 1211 struct MessageUnit_A __iomem *reg = acb->pmuA; 1212 1213 outbound_doorbell = readl(®->outbound_doorbell); 1214 writel(outbound_doorbell, ®->outbound_doorbell); 1215 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) { 1216 arcmsr_iop2drv_data_wrote_handle(acb); 1217 } 1218 1219 if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) { 1220 arcmsr_iop2drv_data_read_handle(acb); 1221 } 1222 } 1223 1224 static void arcmsr_hba_postqueue_isr(struct AdapterControlBlock *acb) 1225 { 1226 uint32_t flag_ccb; 1227 struct MessageUnit_A __iomem *reg = acb->pmuA; 1228 1229 while ((flag_ccb = readl(®->outbound_queueport)) != 0xFFFFFFFF) { 1230 arcmsr_drain_donequeue(acb, flag_ccb); 1231 } 1232 } 1233 1234 static void arcmsr_hbb_postqueue_isr(struct AdapterControlBlock *acb) 1235 { 1236 uint32_t index; 1237 uint32_t flag_ccb; 1238 struct MessageUnit_B *reg = acb->pmuB; 1239 1240 index = reg->doneq_index; 1241 1242 while ((flag_ccb = readl(®->done_qbuffer[index])) != 0) { 1243 writel(0, ®->done_qbuffer[index]); 1244 arcmsr_drain_donequeue(acb, flag_ccb); 1245 index++; 1246 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1247 reg->doneq_index = index; 1248 } 1249 } 1250 1251 static int arcmsr_handle_hba_isr(struct AdapterControlBlock *acb) 1252 { 1253 uint32_t outbound_intstatus; 1254 struct MessageUnit_A __iomem *reg = acb->pmuA; 1255 1256 outbound_intstatus = readl(®->outbound_intstatus) & \ 1257 acb->outbound_int_enable; 1258 if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT)) { 1259 return 1; 1260 } 1261 writel(outbound_intstatus, ®->outbound_intstatus); 1262 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) { 1263 arcmsr_hba_doorbell_isr(acb); 1264 } 1265 if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) { 1266 arcmsr_hba_postqueue_isr(acb); 1267 } 1268 return 0; 1269 } 1270 1271 static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb) 1272 { 1273 uint32_t outbound_doorbell; 1274 struct MessageUnit_B *reg = acb->pmuB; 1275 1276 outbound_doorbell = readl(reg->iop2drv_doorbell_reg) & \ 1277 acb->outbound_int_enable; 1278 if (!outbound_doorbell) 1279 return 1; 1280 1281 writel(~outbound_doorbell, reg->iop2drv_doorbell_reg); 1282 /*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/ 1283 readl(reg->iop2drv_doorbell_reg); 1284 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); 1285 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) { 1286 arcmsr_iop2drv_data_wrote_handle(acb); 1287 } 1288 if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK) { 1289 arcmsr_iop2drv_data_read_handle(acb); 1290 } 1291 if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE) { 1292 arcmsr_hbb_postqueue_isr(acb); 1293 } 1294 1295 return 0; 1296 } 1297 1298 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb) 1299 { 1300 switch (acb->adapter_type) { 1301 case ACB_ADAPTER_TYPE_A: { 1302 if (arcmsr_handle_hba_isr(acb)) { 1303 return IRQ_NONE; 1304 } 1305 } 1306 break; 1307 1308 case ACB_ADAPTER_TYPE_B: { 1309 if (arcmsr_handle_hbb_isr(acb)) { 1310 return IRQ_NONE; 1311 } 1312 } 1313 break; 1314 } 1315 return IRQ_HANDLED; 1316 } 1317 1318 static void arcmsr_iop_parking(struct AdapterControlBlock *acb) 1319 { 1320 if (acb) { 1321 /* stop adapter background rebuild */ 1322 if (acb->acb_flags & ACB_F_MSG_START_BGRB) { 1323 uint32_t intmask_org; 1324 acb->acb_flags &= ~ACB_F_MSG_START_BGRB; 1325 intmask_org = arcmsr_disable_outbound_ints(acb); 1326 arcmsr_stop_adapter_bgrb(acb); 1327 arcmsr_flush_adapter_cache(acb); 1328 arcmsr_enable_outbound_ints(acb, intmask_org); 1329 } 1330 } 1331 } 1332 1333 void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb) 1334 { 1335 int32_t wqbuf_firstindex, wqbuf_lastindex; 1336 uint8_t *pQbuffer; 1337 struct QBUFFER __iomem *pwbuffer; 1338 uint8_t __iomem *iop_data; 1339 int32_t allxfer_len = 0; 1340 1341 pwbuffer = arcmsr_get_iop_wqbuffer(acb); 1342 iop_data = (uint8_t __iomem *)pwbuffer->data; 1343 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) { 1344 acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED); 1345 wqbuf_firstindex = acb->wqbuf_firstindex; 1346 wqbuf_lastindex = acb->wqbuf_lastindex; 1347 while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) { 1348 pQbuffer = &acb->wqbuffer[wqbuf_firstindex]; 1349 memcpy(iop_data, pQbuffer, 1); 1350 wqbuf_firstindex++; 1351 wqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1352 iop_data++; 1353 allxfer_len++; 1354 } 1355 acb->wqbuf_firstindex = wqbuf_firstindex; 1356 pwbuffer->data_len = allxfer_len; 1357 arcmsr_iop_message_wrote(acb); 1358 } 1359 } 1360 1361 static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \ 1362 struct scsi_cmnd *cmd) 1363 { 1364 struct CMD_MESSAGE_FIELD *pcmdmessagefld; 1365 int retvalue = 0, transfer_len = 0; 1366 char *buffer; 1367 struct scatterlist *sg; 1368 uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 | 1369 (uint32_t ) cmd->cmnd[6] << 16 | 1370 (uint32_t ) cmd->cmnd[7] << 8 | 1371 (uint32_t ) cmd->cmnd[8]; 1372 /* 4 bytes: Areca io control code */ 1373 1374 sg = scsi_sglist(cmd); 1375 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; 1376 if (scsi_sg_count(cmd) > 1) { 1377 retvalue = ARCMSR_MESSAGE_FAIL; 1378 goto message_out; 1379 } 1380 transfer_len += sg->length; 1381 1382 if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) { 1383 retvalue = ARCMSR_MESSAGE_FAIL; 1384 goto message_out; 1385 } 1386 pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer; 1387 switch(controlcode) { 1388 1389 case ARCMSR_MESSAGE_READ_RQBUFFER: { 1390 unsigned char *ver_addr; 1391 uint8_t *pQbuffer, *ptmpQbuffer; 1392 int32_t allxfer_len = 0; 1393 1394 ver_addr = kmalloc(1032, GFP_ATOMIC); 1395 if (!ver_addr) { 1396 retvalue = ARCMSR_MESSAGE_FAIL; 1397 goto message_out; 1398 } 1399 ptmpQbuffer = ver_addr; 1400 while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex) 1401 && (allxfer_len < 1031)) { 1402 pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex]; 1403 memcpy(ptmpQbuffer, pQbuffer, 1); 1404 acb->rqbuf_firstindex++; 1405 acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER; 1406 ptmpQbuffer++; 1407 allxfer_len++; 1408 } 1409 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1410 1411 struct QBUFFER __iomem *prbuffer; 1412 uint8_t __iomem *iop_data; 1413 int32_t iop_len; 1414 1415 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1416 prbuffer = arcmsr_get_iop_rqbuffer(acb); 1417 iop_data = prbuffer->data; 1418 iop_len = readl(&prbuffer->data_len); 1419 while (iop_len > 0) { 1420 acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data); 1421 acb->rqbuf_lastindex++; 1422 acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1423 iop_data++; 1424 iop_len--; 1425 } 1426 arcmsr_iop_message_read(acb); 1427 } 1428 memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len); 1429 pcmdmessagefld->cmdmessage.Length = allxfer_len; 1430 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1431 kfree(ver_addr); 1432 } 1433 break; 1434 1435 case ARCMSR_MESSAGE_WRITE_WQBUFFER: { 1436 unsigned char *ver_addr; 1437 int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex; 1438 uint8_t *pQbuffer, *ptmpuserbuffer; 1439 1440 ver_addr = kmalloc(1032, GFP_ATOMIC); 1441 if (!ver_addr) { 1442 retvalue = ARCMSR_MESSAGE_FAIL; 1443 goto message_out; 1444 } 1445 ptmpuserbuffer = ver_addr; 1446 user_len = pcmdmessagefld->cmdmessage.Length; 1447 memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len); 1448 wqbuf_lastindex = acb->wqbuf_lastindex; 1449 wqbuf_firstindex = acb->wqbuf_firstindex; 1450 if (wqbuf_lastindex != wqbuf_firstindex) { 1451 struct SENSE_DATA *sensebuffer = 1452 (struct SENSE_DATA *)cmd->sense_buffer; 1453 arcmsr_post_ioctldata2iop(acb); 1454 /* has error report sensedata */ 1455 sensebuffer->ErrorCode = 0x70; 1456 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1457 sensebuffer->AdditionalSenseLength = 0x0A; 1458 sensebuffer->AdditionalSenseCode = 0x20; 1459 sensebuffer->Valid = 1; 1460 retvalue = ARCMSR_MESSAGE_FAIL; 1461 } else { 1462 my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1) 1463 &(ARCMSR_MAX_QBUFFER - 1); 1464 if (my_empty_len >= user_len) { 1465 while (user_len > 0) { 1466 pQbuffer = 1467 &acb->wqbuffer[acb->wqbuf_lastindex]; 1468 memcpy(pQbuffer, ptmpuserbuffer, 1); 1469 acb->wqbuf_lastindex++; 1470 acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER; 1471 ptmpuserbuffer++; 1472 user_len--; 1473 } 1474 if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) { 1475 acb->acb_flags &= 1476 ~ACB_F_MESSAGE_WQBUFFER_CLEARED; 1477 arcmsr_post_ioctldata2iop(acb); 1478 } 1479 } else { 1480 /* has error report sensedata */ 1481 struct SENSE_DATA *sensebuffer = 1482 (struct SENSE_DATA *)cmd->sense_buffer; 1483 sensebuffer->ErrorCode = 0x70; 1484 sensebuffer->SenseKey = ILLEGAL_REQUEST; 1485 sensebuffer->AdditionalSenseLength = 0x0A; 1486 sensebuffer->AdditionalSenseCode = 0x20; 1487 sensebuffer->Valid = 1; 1488 retvalue = ARCMSR_MESSAGE_FAIL; 1489 } 1490 } 1491 kfree(ver_addr); 1492 } 1493 break; 1494 1495 case ARCMSR_MESSAGE_CLEAR_RQBUFFER: { 1496 uint8_t *pQbuffer = acb->rqbuffer; 1497 1498 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1499 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1500 arcmsr_iop_message_read(acb); 1501 } 1502 acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED; 1503 acb->rqbuf_firstindex = 0; 1504 acb->rqbuf_lastindex = 0; 1505 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1506 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1507 } 1508 break; 1509 1510 case ARCMSR_MESSAGE_CLEAR_WQBUFFER: { 1511 uint8_t *pQbuffer = acb->wqbuffer; 1512 1513 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1514 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1515 arcmsr_iop_message_read(acb); 1516 } 1517 acb->acb_flags |= 1518 (ACB_F_MESSAGE_WQBUFFER_CLEARED | 1519 ACB_F_MESSAGE_WQBUFFER_READED); 1520 acb->wqbuf_firstindex = 0; 1521 acb->wqbuf_lastindex = 0; 1522 memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER); 1523 pcmdmessagefld->cmdmessage.ReturnCode = 1524 ARCMSR_MESSAGE_RETURNCODE_OK; 1525 } 1526 break; 1527 1528 case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: { 1529 uint8_t *pQbuffer; 1530 1531 if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) { 1532 acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW; 1533 arcmsr_iop_message_read(acb); 1534 } 1535 acb->acb_flags |= 1536 (ACB_F_MESSAGE_WQBUFFER_CLEARED 1537 | ACB_F_MESSAGE_RQBUFFER_CLEARED 1538 | ACB_F_MESSAGE_WQBUFFER_READED); 1539 acb->rqbuf_firstindex = 0; 1540 acb->rqbuf_lastindex = 0; 1541 acb->wqbuf_firstindex = 0; 1542 acb->wqbuf_lastindex = 0; 1543 pQbuffer = acb->rqbuffer; 1544 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1545 pQbuffer = acb->wqbuffer; 1546 memset(pQbuffer, 0, sizeof(struct QBUFFER)); 1547 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1548 } 1549 break; 1550 1551 case ARCMSR_MESSAGE_RETURN_CODE_3F: { 1552 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_3F; 1553 } 1554 break; 1555 1556 case ARCMSR_MESSAGE_SAY_HELLO: { 1557 int8_t *hello_string = "Hello! I am ARCMSR"; 1558 1559 memcpy(pcmdmessagefld->messagedatabuffer, hello_string 1560 , (int16_t)strlen(hello_string)); 1561 pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK; 1562 } 1563 break; 1564 1565 case ARCMSR_MESSAGE_SAY_GOODBYE: 1566 arcmsr_iop_parking(acb); 1567 break; 1568 1569 case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: 1570 arcmsr_flush_adapter_cache(acb); 1571 break; 1572 1573 default: 1574 retvalue = ARCMSR_MESSAGE_FAIL; 1575 } 1576 message_out: 1577 sg = scsi_sglist(cmd); 1578 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1579 return retvalue; 1580 } 1581 1582 static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb) 1583 { 1584 struct list_head *head = &acb->ccb_free_list; 1585 struct CommandControlBlock *ccb = NULL; 1586 1587 if (!list_empty(head)) { 1588 ccb = list_entry(head->next, struct CommandControlBlock, list); 1589 list_del(head->next); 1590 } 1591 return ccb; 1592 } 1593 1594 static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb, 1595 struct scsi_cmnd *cmd) 1596 { 1597 switch (cmd->cmnd[0]) { 1598 case INQUIRY: { 1599 unsigned char inqdata[36]; 1600 char *buffer; 1601 struct scatterlist *sg; 1602 1603 if (cmd->device->lun) { 1604 cmd->result = (DID_TIME_OUT << 16); 1605 cmd->scsi_done(cmd); 1606 return; 1607 } 1608 inqdata[0] = TYPE_PROCESSOR; 1609 /* Periph Qualifier & Periph Dev Type */ 1610 inqdata[1] = 0; 1611 /* rem media bit & Dev Type Modifier */ 1612 inqdata[2] = 0; 1613 /* ISO, ECMA, & ANSI versions */ 1614 inqdata[4] = 31; 1615 /* length of additional data */ 1616 strncpy(&inqdata[8], "Areca ", 8); 1617 /* Vendor Identification */ 1618 strncpy(&inqdata[16], "RAID controller ", 16); 1619 /* Product Identification */ 1620 strncpy(&inqdata[32], "R001", 4); /* Product Revision */ 1621 1622 sg = scsi_sglist(cmd); 1623 buffer = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset; 1624 1625 memcpy(buffer, inqdata, sizeof(inqdata)); 1626 sg = scsi_sglist(cmd); 1627 kunmap_atomic(buffer - sg->offset, KM_IRQ0); 1628 1629 cmd->scsi_done(cmd); 1630 } 1631 break; 1632 case WRITE_BUFFER: 1633 case READ_BUFFER: { 1634 if (arcmsr_iop_message_xfer(acb, cmd)) 1635 cmd->result = (DID_ERROR << 16); 1636 cmd->scsi_done(cmd); 1637 } 1638 break; 1639 default: 1640 cmd->scsi_done(cmd); 1641 } 1642 } 1643 1644 static int arcmsr_queue_command(struct scsi_cmnd *cmd, 1645 void (* done)(struct scsi_cmnd *)) 1646 { 1647 struct Scsi_Host *host = cmd->device->host; 1648 struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata; 1649 struct CommandControlBlock *ccb; 1650 int target = cmd->device->id; 1651 int lun = cmd->device->lun; 1652 1653 cmd->scsi_done = done; 1654 cmd->host_scribble = NULL; 1655 cmd->result = 0; 1656 if (acb->acb_flags & ACB_F_BUS_RESET) { 1657 printk(KERN_NOTICE "arcmsr%d: bus reset" 1658 " and return busy \n" 1659 , acb->host->host_no); 1660 return SCSI_MLQUEUE_HOST_BUSY; 1661 } 1662 if (target == 16) { 1663 /* virtual device for iop message transfer */ 1664 arcmsr_handle_virtual_command(acb, cmd); 1665 return 0; 1666 } 1667 if (acb->devstate[target][lun] == ARECA_RAID_GONE) { 1668 uint8_t block_cmd; 1669 1670 block_cmd = cmd->cmnd[0] & 0x0f; 1671 if (block_cmd == 0x08 || block_cmd == 0x0a) { 1672 printk(KERN_NOTICE 1673 "arcmsr%d: block 'read/write'" 1674 "command with gone raid volume" 1675 " Cmd = %2x, TargetId = %d, Lun = %d \n" 1676 , acb->host->host_no 1677 , cmd->cmnd[0] 1678 , target, lun); 1679 cmd->result = (DID_NO_CONNECT << 16); 1680 cmd->scsi_done(cmd); 1681 return 0; 1682 } 1683 } 1684 if (atomic_read(&acb->ccboutstandingcount) >= 1685 ARCMSR_MAX_OUTSTANDING_CMD) 1686 return SCSI_MLQUEUE_HOST_BUSY; 1687 1688 ccb = arcmsr_get_freeccb(acb); 1689 if (!ccb) 1690 return SCSI_MLQUEUE_HOST_BUSY; 1691 if ( arcmsr_build_ccb( acb, ccb, cmd ) == FAILED ) { 1692 cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1); 1693 cmd->scsi_done(cmd); 1694 return 0; 1695 } 1696 arcmsr_post_ccb(acb, ccb); 1697 return 0; 1698 } 1699 1700 static void arcmsr_get_hba_config(struct AdapterControlBlock *acb) 1701 { 1702 struct MessageUnit_A __iomem *reg = acb->pmuA; 1703 char *acb_firm_model = acb->firm_model; 1704 char *acb_firm_version = acb->firm_version; 1705 char __iomem *iop_firm_model = (char __iomem *)(®->message_rwbuffer[15]); 1706 char __iomem *iop_firm_version = (char __iomem *)(®->message_rwbuffer[17]); 1707 int count; 1708 1709 writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, ®->inbound_msgaddr0); 1710 if (arcmsr_hba_wait_msgint_ready(acb)) { 1711 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1712 miscellaneous data' timeout \n", acb->host->host_no); 1713 } 1714 1715 count = 8; 1716 while (count) { 1717 *acb_firm_model = readb(iop_firm_model); 1718 acb_firm_model++; 1719 iop_firm_model++; 1720 count--; 1721 } 1722 1723 count = 16; 1724 while (count) { 1725 *acb_firm_version = readb(iop_firm_version); 1726 acb_firm_version++; 1727 iop_firm_version++; 1728 count--; 1729 } 1730 1731 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n" 1732 , acb->host->host_no 1733 , acb->firm_version); 1734 1735 acb->firm_request_len = readl(®->message_rwbuffer[1]); 1736 acb->firm_numbers_queue = readl(®->message_rwbuffer[2]); 1737 acb->firm_sdram_size = readl(®->message_rwbuffer[3]); 1738 acb->firm_hd_channels = readl(®->message_rwbuffer[4]); 1739 } 1740 1741 static void arcmsr_get_hbb_config(struct AdapterControlBlock *acb) 1742 { 1743 struct MessageUnit_B *reg = acb->pmuB; 1744 uint32_t __iomem *lrwbuffer = reg->msgcode_rwbuffer_reg; 1745 char *acb_firm_model = acb->firm_model; 1746 char *acb_firm_version = acb->firm_version; 1747 char __iomem *iop_firm_model = (char __iomem *)(&lrwbuffer[15]); 1748 /*firm_model,15,60-67*/ 1749 char __iomem *iop_firm_version = (char __iomem *)(&lrwbuffer[17]); 1750 /*firm_version,17,68-83*/ 1751 int count; 1752 1753 writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell_reg); 1754 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1755 printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \ 1756 miscellaneous data' timeout \n", acb->host->host_no); 1757 } 1758 1759 count = 8; 1760 while (count) 1761 { 1762 *acb_firm_model = readb(iop_firm_model); 1763 acb_firm_model++; 1764 iop_firm_model++; 1765 count--; 1766 } 1767 1768 count = 16; 1769 while (count) 1770 { 1771 *acb_firm_version = readb(iop_firm_version); 1772 acb_firm_version++; 1773 iop_firm_version++; 1774 count--; 1775 } 1776 1777 printk(KERN_INFO "ARECA RAID ADAPTER%d: FIRMWARE VERSION %s \n", 1778 acb->host->host_no, 1779 acb->firm_version); 1780 1781 lrwbuffer++; 1782 acb->firm_request_len = readl(lrwbuffer++); 1783 /*firm_request_len,1,04-07*/ 1784 acb->firm_numbers_queue = readl(lrwbuffer++); 1785 /*firm_numbers_queue,2,08-11*/ 1786 acb->firm_sdram_size = readl(lrwbuffer++); 1787 /*firm_sdram_size,3,12-15*/ 1788 acb->firm_hd_channels = readl(lrwbuffer); 1789 /*firm_ide_channels,4,16-19*/ 1790 } 1791 1792 static void arcmsr_get_firmware_spec(struct AdapterControlBlock *acb) 1793 { 1794 switch (acb->adapter_type) { 1795 case ACB_ADAPTER_TYPE_A: { 1796 arcmsr_get_hba_config(acb); 1797 } 1798 break; 1799 1800 case ACB_ADAPTER_TYPE_B: { 1801 arcmsr_get_hbb_config(acb); 1802 } 1803 break; 1804 } 1805 } 1806 1807 static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb, 1808 struct CommandControlBlock *poll_ccb) 1809 { 1810 struct MessageUnit_A __iomem *reg = acb->pmuA; 1811 struct CommandControlBlock *ccb; 1812 uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0; 1813 1814 polling_hba_ccb_retry: 1815 poll_count++; 1816 outbound_intstatus = readl(®->outbound_intstatus) & acb->outbound_int_enable; 1817 writel(outbound_intstatus, ®->outbound_intstatus);/*clear interrupt*/ 1818 while (1) { 1819 if ((flag_ccb = readl(®->outbound_queueport)) == 0xFFFFFFFF) { 1820 if (poll_ccb_done) 1821 break; 1822 else { 1823 msleep(25); 1824 if (poll_count > 100) 1825 break; 1826 goto polling_hba_ccb_retry; 1827 } 1828 } 1829 ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5)); 1830 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1831 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1832 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { 1833 printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'" 1834 " poll command abort successfully \n" 1835 , acb->host->host_no 1836 , ccb->pcmd->device->id 1837 , ccb->pcmd->device->lun 1838 , ccb); 1839 ccb->pcmd->result = DID_ABORT << 16; 1840 arcmsr_ccb_complete(ccb, 1); 1841 poll_ccb_done = 1; 1842 continue; 1843 } 1844 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1845 " command done ccb = '0x%p'" 1846 "ccboutstandingcount = %d \n" 1847 , acb->host->host_no 1848 , ccb 1849 , atomic_read(&acb->ccboutstandingcount)); 1850 continue; 1851 } 1852 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1853 } 1854 } 1855 1856 static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, 1857 struct CommandControlBlock *poll_ccb) 1858 { 1859 struct MessageUnit_B *reg = acb->pmuB; 1860 struct CommandControlBlock *ccb; 1861 uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0; 1862 int index; 1863 1864 polling_hbb_ccb_retry: 1865 poll_count++; 1866 /* clear doorbell interrupt */ 1867 writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 1868 while (1) { 1869 index = reg->doneq_index; 1870 if ((flag_ccb = readl(®->done_qbuffer[index])) == 0) { 1871 if (poll_ccb_done) 1872 break; 1873 else { 1874 msleep(25); 1875 if (poll_count > 100) 1876 break; 1877 goto polling_hbb_ccb_retry; 1878 } 1879 } 1880 writel(0, ®->done_qbuffer[index]); 1881 index++; 1882 /*if last index number set it to 0 */ 1883 index %= ARCMSR_MAX_HBB_POSTQUEUE; 1884 reg->doneq_index = index; 1885 /* check ifcommand done with no error*/ 1886 ccb = (struct CommandControlBlock *)\ 1887 (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/ 1888 poll_ccb_done = (ccb == poll_ccb) ? 1:0; 1889 if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) { 1890 if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) { 1891 printk(KERN_NOTICE "arcmsr%d: \ 1892 scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n" 1893 ,acb->host->host_no 1894 ,ccb->pcmd->device->id 1895 ,ccb->pcmd->device->lun 1896 ,ccb); 1897 ccb->pcmd->result = DID_ABORT << 16; 1898 arcmsr_ccb_complete(ccb, 1); 1899 continue; 1900 } 1901 printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb" 1902 " command done ccb = '0x%p'" 1903 "ccboutstandingcount = %d \n" 1904 , acb->host->host_no 1905 , ccb 1906 , atomic_read(&acb->ccboutstandingcount)); 1907 continue; 1908 } 1909 arcmsr_report_ccb_state(acb, ccb, flag_ccb); 1910 } /*drain reply FIFO*/ 1911 } 1912 1913 static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, 1914 struct CommandControlBlock *poll_ccb) 1915 { 1916 switch (acb->adapter_type) { 1917 1918 case ACB_ADAPTER_TYPE_A: { 1919 arcmsr_polling_hba_ccbdone(acb,poll_ccb); 1920 } 1921 break; 1922 1923 case ACB_ADAPTER_TYPE_B: { 1924 arcmsr_polling_hbb_ccbdone(acb,poll_ccb); 1925 } 1926 } 1927 } 1928 1929 static int arcmsr_iop_confirm(struct AdapterControlBlock *acb) 1930 { 1931 uint32_t cdb_phyaddr, ccb_phyaddr_hi32; 1932 dma_addr_t dma_coherent_handle; 1933 /* 1934 ******************************************************************** 1935 ** here we need to tell iop 331 our freeccb.HighPart 1936 ** if freeccb.HighPart is not zero 1937 ******************************************************************** 1938 */ 1939 dma_coherent_handle = acb->dma_coherent_handle; 1940 cdb_phyaddr = (uint32_t)(dma_coherent_handle); 1941 ccb_phyaddr_hi32 = (uint32_t)((cdb_phyaddr >> 16) >> 16); 1942 /* 1943 *********************************************************************** 1944 ** if adapter type B, set window of "post command Q" 1945 *********************************************************************** 1946 */ 1947 switch (acb->adapter_type) { 1948 1949 case ACB_ADAPTER_TYPE_A: { 1950 if (ccb_phyaddr_hi32 != 0) { 1951 struct MessageUnit_A __iomem *reg = acb->pmuA; 1952 uint32_t intmask_org; 1953 intmask_org = arcmsr_disable_outbound_ints(acb); 1954 writel(ARCMSR_SIGNATURE_SET_CONFIG, \ 1955 ®->message_rwbuffer[0]); 1956 writel(ccb_phyaddr_hi32, ®->message_rwbuffer[1]); 1957 writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \ 1958 ®->inbound_msgaddr0); 1959 if (arcmsr_hba_wait_msgint_ready(acb)) { 1960 printk(KERN_NOTICE "arcmsr%d: ""set ccb high \ 1961 part physical address timeout\n", 1962 acb->host->host_no); 1963 return 1; 1964 } 1965 arcmsr_enable_outbound_ints(acb, intmask_org); 1966 } 1967 } 1968 break; 1969 1970 case ACB_ADAPTER_TYPE_B: { 1971 unsigned long post_queue_phyaddr; 1972 uint32_t __iomem *rwbuffer; 1973 1974 struct MessageUnit_B *reg = acb->pmuB; 1975 uint32_t intmask_org; 1976 intmask_org = arcmsr_disable_outbound_ints(acb); 1977 reg->postq_index = 0; 1978 reg->doneq_index = 0; 1979 writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell_reg); 1980 if (arcmsr_hbb_wait_msgint_ready(acb)) { 1981 printk(KERN_NOTICE "arcmsr%d:can not set diver mode\n", \ 1982 acb->host->host_no); 1983 return 1; 1984 } 1985 post_queue_phyaddr = cdb_phyaddr + ARCMSR_MAX_FREECCB_NUM * \ 1986 sizeof(struct CommandControlBlock) + offsetof(struct MessageUnit_B, post_qbuffer) ; 1987 rwbuffer = reg->msgcode_rwbuffer_reg; 1988 /* driver "set config" signature */ 1989 writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++); 1990 /* normal should be zero */ 1991 writel(ccb_phyaddr_hi32, rwbuffer++); 1992 /* postQ size (256 + 8)*4 */ 1993 writel(post_queue_phyaddr, rwbuffer++); 1994 /* doneQ size (256 + 8)*4 */ 1995 writel(post_queue_phyaddr + 1056, rwbuffer++); 1996 /* ccb maxQ size must be --> [(256 + 8)*4]*/ 1997 writel(1056, rwbuffer); 1998 1999 writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell_reg); 2000 if (arcmsr_hbb_wait_msgint_ready(acb)) { 2001 printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \ 2002 timeout \n",acb->host->host_no); 2003 return 1; 2004 } 2005 2006 writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell_reg); 2007 if (arcmsr_hbb_wait_msgint_ready(acb)) { 2008 printk(KERN_NOTICE "arcmsr%d: 'can not set diver mode \n"\ 2009 ,acb->host->host_no); 2010 return 1; 2011 } 2012 arcmsr_enable_outbound_ints(acb, intmask_org); 2013 } 2014 break; 2015 } 2016 return 0; 2017 } 2018 2019 static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb) 2020 { 2021 uint32_t firmware_state = 0; 2022 2023 switch (acb->adapter_type) { 2024 2025 case ACB_ADAPTER_TYPE_A: { 2026 struct MessageUnit_A __iomem *reg = acb->pmuA; 2027 do { 2028 firmware_state = readl(®->outbound_msgaddr1); 2029 } while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0); 2030 } 2031 break; 2032 2033 case ACB_ADAPTER_TYPE_B: { 2034 struct MessageUnit_B *reg = acb->pmuB; 2035 do { 2036 firmware_state = readl(reg->iop2drv_doorbell_reg); 2037 } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0); 2038 writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg); 2039 } 2040 break; 2041 } 2042 } 2043 2044 static void arcmsr_start_hba_bgrb(struct AdapterControlBlock *acb) 2045 { 2046 struct MessageUnit_A __iomem *reg = acb->pmuA; 2047 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2048 writel(ARCMSR_INBOUND_MESG0_START_BGRB, ®->inbound_msgaddr0); 2049 if (arcmsr_hba_wait_msgint_ready(acb)) { 2050 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2051 rebulid' timeout \n", acb->host->host_no); 2052 } 2053 } 2054 2055 static void arcmsr_start_hbb_bgrb(struct AdapterControlBlock *acb) 2056 { 2057 struct MessageUnit_B *reg = acb->pmuB; 2058 acb->acb_flags |= ACB_F_MSG_START_BGRB; 2059 writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell_reg); 2060 if (arcmsr_hbb_wait_msgint_ready(acb)) { 2061 printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \ 2062 rebulid' timeout \n",acb->host->host_no); 2063 } 2064 } 2065 2066 static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb) 2067 { 2068 switch (acb->adapter_type) { 2069 case ACB_ADAPTER_TYPE_A: 2070 arcmsr_start_hba_bgrb(acb); 2071 break; 2072 case ACB_ADAPTER_TYPE_B: 2073 arcmsr_start_hbb_bgrb(acb); 2074 break; 2075 } 2076 } 2077 2078 static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb) 2079 { 2080 switch (acb->adapter_type) { 2081 case ACB_ADAPTER_TYPE_A: { 2082 struct MessageUnit_A __iomem *reg = acb->pmuA; 2083 uint32_t outbound_doorbell; 2084 /* empty doorbell Qbuffer if door bell ringed */ 2085 outbound_doorbell = readl(®->outbound_doorbell); 2086 /*clear doorbell interrupt */ 2087 writel(outbound_doorbell, ®->outbound_doorbell); 2088 writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, ®->inbound_doorbell); 2089 } 2090 break; 2091 2092 case ACB_ADAPTER_TYPE_B: { 2093 struct MessageUnit_B *reg = acb->pmuB; 2094 /*clear interrupt and message state*/ 2095 writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell_reg); 2096 writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg); 2097 /* let IOP know data has been read */ 2098 } 2099 break; 2100 } 2101 } 2102 2103 static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb) 2104 { 2105 switch (acb->adapter_type) { 2106 case ACB_ADAPTER_TYPE_A: 2107 return; 2108 case ACB_ADAPTER_TYPE_B: 2109 { 2110 struct MessageUnit_B *reg = acb->pmuB; 2111 writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell_reg); 2112 if(arcmsr_hbb_wait_msgint_ready(acb)) { 2113 printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT"); 2114 return; 2115 } 2116 } 2117 break; 2118 } 2119 return; 2120 } 2121 2122 static void arcmsr_iop_init(struct AdapterControlBlock *acb) 2123 { 2124 uint32_t intmask_org; 2125 2126 /* disable all outbound interrupt */ 2127 intmask_org = arcmsr_disable_outbound_ints(acb); 2128 arcmsr_wait_firmware_ready(acb); 2129 arcmsr_iop_confirm(acb); 2130 arcmsr_get_firmware_spec(acb); 2131 /*start background rebuild*/ 2132 arcmsr_start_adapter_bgrb(acb); 2133 /* empty doorbell Qbuffer if door bell ringed */ 2134 arcmsr_clear_doorbell_queue_buffer(acb); 2135 arcmsr_enable_eoi_mode(acb); 2136 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2137 arcmsr_enable_outbound_ints(acb, intmask_org); 2138 acb->acb_flags |= ACB_F_IOP_INITED; 2139 } 2140 2141 static void arcmsr_iop_reset(struct AdapterControlBlock *acb) 2142 { 2143 struct CommandControlBlock *ccb; 2144 uint32_t intmask_org; 2145 int i = 0; 2146 2147 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2148 /* talk to iop 331 outstanding command aborted */ 2149 arcmsr_abort_allcmd(acb); 2150 2151 /* wait for 3 sec for all command aborted*/ 2152 ssleep(3); 2153 2154 /* disable all outbound interrupt */ 2155 intmask_org = arcmsr_disable_outbound_ints(acb); 2156 /* clear all outbound posted Q */ 2157 arcmsr_done4abort_postqueue(acb); 2158 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2159 ccb = acb->pccb_pool[i]; 2160 if (ccb->startdone == ARCMSR_CCB_START) { 2161 ccb->startdone = ARCMSR_CCB_ABORTED; 2162 arcmsr_ccb_complete(ccb, 1); 2163 } 2164 } 2165 /* enable all outbound interrupt */ 2166 arcmsr_enable_outbound_ints(acb, intmask_org); 2167 } 2168 } 2169 2170 static int arcmsr_bus_reset(struct scsi_cmnd *cmd) 2171 { 2172 struct AdapterControlBlock *acb = 2173 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2174 int i; 2175 2176 acb->num_resets++; 2177 acb->acb_flags |= ACB_F_BUS_RESET; 2178 for (i = 0; i < 400; i++) { 2179 if (!atomic_read(&acb->ccboutstandingcount)) 2180 break; 2181 arcmsr_interrupt(acb);/* FIXME: need spinlock */ 2182 msleep(25); 2183 } 2184 arcmsr_iop_reset(acb); 2185 acb->acb_flags &= ~ACB_F_BUS_RESET; 2186 return SUCCESS; 2187 } 2188 2189 static void arcmsr_abort_one_cmd(struct AdapterControlBlock *acb, 2190 struct CommandControlBlock *ccb) 2191 { 2192 u32 intmask; 2193 2194 ccb->startdone = ARCMSR_CCB_ABORTED; 2195 2196 /* 2197 ** Wait for 3 sec for all command done. 2198 */ 2199 ssleep(3); 2200 2201 intmask = arcmsr_disable_outbound_ints(acb); 2202 arcmsr_polling_ccbdone(acb, ccb); 2203 arcmsr_enable_outbound_ints(acb, intmask); 2204 } 2205 2206 static int arcmsr_abort(struct scsi_cmnd *cmd) 2207 { 2208 struct AdapterControlBlock *acb = 2209 (struct AdapterControlBlock *)cmd->device->host->hostdata; 2210 int i = 0; 2211 2212 printk(KERN_NOTICE 2213 "arcmsr%d: abort device command of scsi id = %d lun = %d \n", 2214 acb->host->host_no, cmd->device->id, cmd->device->lun); 2215 acb->num_aborts++; 2216 /* 2217 ************************************************ 2218 ** the all interrupt service routine is locked 2219 ** we need to handle it as soon as possible and exit 2220 ************************************************ 2221 */ 2222 if (!atomic_read(&acb->ccboutstandingcount)) 2223 return SUCCESS; 2224 2225 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2226 struct CommandControlBlock *ccb = acb->pccb_pool[i]; 2227 if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) { 2228 arcmsr_abort_one_cmd(acb, ccb); 2229 break; 2230 } 2231 } 2232 2233 return SUCCESS; 2234 } 2235 2236 static const char *arcmsr_info(struct Scsi_Host *host) 2237 { 2238 struct AdapterControlBlock *acb = 2239 (struct AdapterControlBlock *) host->hostdata; 2240 static char buf[256]; 2241 char *type; 2242 int raid6 = 1; 2243 2244 switch (acb->pdev->device) { 2245 case PCI_DEVICE_ID_ARECA_1110: 2246 case PCI_DEVICE_ID_ARECA_1200: 2247 case PCI_DEVICE_ID_ARECA_1202: 2248 case PCI_DEVICE_ID_ARECA_1210: 2249 raid6 = 0; 2250 /*FALLTHRU*/ 2251 case PCI_DEVICE_ID_ARECA_1120: 2252 case PCI_DEVICE_ID_ARECA_1130: 2253 case PCI_DEVICE_ID_ARECA_1160: 2254 case PCI_DEVICE_ID_ARECA_1170: 2255 case PCI_DEVICE_ID_ARECA_1201: 2256 case PCI_DEVICE_ID_ARECA_1220: 2257 case PCI_DEVICE_ID_ARECA_1230: 2258 case PCI_DEVICE_ID_ARECA_1260: 2259 case PCI_DEVICE_ID_ARECA_1270: 2260 case PCI_DEVICE_ID_ARECA_1280: 2261 type = "SATA"; 2262 break; 2263 case PCI_DEVICE_ID_ARECA_1380: 2264 case PCI_DEVICE_ID_ARECA_1381: 2265 case PCI_DEVICE_ID_ARECA_1680: 2266 case PCI_DEVICE_ID_ARECA_1681: 2267 type = "SAS"; 2268 break; 2269 default: 2270 type = "X-TYPE"; 2271 break; 2272 } 2273 sprintf(buf, "Areca %s Host Adapter RAID Controller%s\n %s", 2274 type, raid6 ? "( RAID6 capable)" : "", 2275 ARCMSR_DRIVER_VERSION); 2276 return buf; 2277 } 2278 #ifdef CONFIG_SCSI_ARCMSR_AER 2279 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev) 2280 { 2281 struct Scsi_Host *host = pci_get_drvdata(pdev); 2282 struct AdapterControlBlock *acb = 2283 (struct AdapterControlBlock *) host->hostdata; 2284 uint32_t intmask_org; 2285 int i, j; 2286 2287 if (pci_enable_device(pdev)) { 2288 return PCI_ERS_RESULT_DISCONNECT; 2289 } 2290 pci_set_master(pdev); 2291 intmask_org = arcmsr_disable_outbound_ints(acb); 2292 acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED | 2293 ACB_F_MESSAGE_RQBUFFER_CLEARED | 2294 ACB_F_MESSAGE_WQBUFFER_READED); 2295 acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER; 2296 for (i = 0; i < ARCMSR_MAX_TARGETID; i++) 2297 for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++) 2298 acb->devstate[i][j] = ARECA_RAID_GONE; 2299 2300 arcmsr_wait_firmware_ready(acb); 2301 arcmsr_iop_confirm(acb); 2302 /* disable all outbound interrupt */ 2303 arcmsr_get_firmware_spec(acb); 2304 /*start background rebuild*/ 2305 arcmsr_start_adapter_bgrb(acb); 2306 /* empty doorbell Qbuffer if door bell ringed */ 2307 arcmsr_clear_doorbell_queue_buffer(acb); 2308 arcmsr_enable_eoi_mode(acb); 2309 /* enable outbound Post Queue,outbound doorbell Interrupt */ 2310 arcmsr_enable_outbound_ints(acb, intmask_org); 2311 acb->acb_flags |= ACB_F_IOP_INITED; 2312 2313 pci_enable_pcie_error_reporting(pdev); 2314 return PCI_ERS_RESULT_RECOVERED; 2315 } 2316 2317 static void arcmsr_pci_ers_need_reset_forepart(struct pci_dev *pdev) 2318 { 2319 struct Scsi_Host *host = pci_get_drvdata(pdev); 2320 struct AdapterControlBlock *acb = (struct AdapterControlBlock *)host->hostdata; 2321 struct CommandControlBlock *ccb; 2322 uint32_t intmask_org; 2323 int i = 0; 2324 2325 if (atomic_read(&acb->ccboutstandingcount) != 0) { 2326 /* talk to iop 331 outstanding command aborted */ 2327 arcmsr_abort_allcmd(acb); 2328 /* wait for 3 sec for all command aborted*/ 2329 ssleep(3); 2330 /* disable all outbound interrupt */ 2331 intmask_org = arcmsr_disable_outbound_ints(acb); 2332 /* clear all outbound posted Q */ 2333 arcmsr_done4abort_postqueue(acb); 2334 for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) { 2335 ccb = acb->pccb_pool[i]; 2336 if (ccb->startdone == ARCMSR_CCB_START) { 2337 ccb->startdone = ARCMSR_CCB_ABORTED; 2338 arcmsr_ccb_complete(ccb, 1); 2339 } 2340 } 2341 /* enable all outbound interrupt */ 2342 arcmsr_enable_outbound_ints(acb, intmask_org); 2343 } 2344 pci_disable_device(pdev); 2345 } 2346 2347 static void arcmsr_pci_ers_disconnect_forepart(struct pci_dev *pdev) 2348 { 2349 struct Scsi_Host *host = pci_get_drvdata(pdev); 2350 struct AdapterControlBlock *acb = \ 2351 (struct AdapterControlBlock *)host->hostdata; 2352 2353 arcmsr_stop_adapter_bgrb(acb); 2354 arcmsr_flush_adapter_cache(acb); 2355 } 2356 2357 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev, 2358 pci_channel_state_t state) 2359 { 2360 switch (state) { 2361 case pci_channel_io_frozen: 2362 arcmsr_pci_ers_need_reset_forepart(pdev); 2363 return PCI_ERS_RESULT_NEED_RESET; 2364 case pci_channel_io_perm_failure: 2365 arcmsr_pci_ers_disconnect_forepart(pdev); 2366 return PCI_ERS_RESULT_DISCONNECT; 2367 break; 2368 default: 2369 return PCI_ERS_RESULT_NEED_RESET; 2370 } 2371 } 2372 #endif 2373